polar

adjective

1. 1

   having a pair of equal and opposite charges

2. 2

   being of crucial importance

   a pivotal event

   Its pivotal location has also exposed it to periodic invasions"- Henry Kissinger

3. 3

   extremely cold

   an arctic climate

   a frigid day

4. 4

   characterized by opposite extremes; completely opposed

   in diametric contradiction to his claims

   diametrical (or opposite) points of view

5. 5

   of or existing at or near a geographical pole or within the Arctic or Antarctic Circles

   polar regions

6. 6

   located at or near or coming from the earth's poles

   polar diameter

   polar zone